Use WhoIs lookup anytime you want to perform a search to see who owns a domain name, how many pages from a site are listed with Google or even search WhoIs address listings for a website's owner.
The word act, as used in the term Act of Congress, is a common, not a proper noun. The capitalization of the word act is deprecated by some dictionaries and usage authorities. Some writers, in particular the U.S. Code, capitalize Act.
1 The first word in a sentence should be capitalized. 2  Formal names and proper nouns should be capitalized. 3  The months and days of the week should be capitalized. 4  Your university should be capitalized.  Your employer and past employers' names should be capitalized.